Arizona telescope array gets upgrade to see fainter stars

Published: Saturday, June 2nd, 2018 at 2:47pm

Updated: Saturday, June 2nd, 2018 at 4:46pm

In this May 28, 2018 photo, Gerard van Belle, an astronomer at Lowell Observatory, stands inside one of the telescope domes at the Navy Optical Precision Interferometer on Anderson Mesa, southeast of Flagstaff, Arizona. More than 20 years after it was built, the interferometer is getting a major upgrade. (Jake Bacon/Arizona Daily Sun via AP)

Three more large mirrors, measuring about a meter in diameter each, will be installed along the arms of the telescope array over the next several months. The first new mirror with its accompanying hardware was delivered to the site Tuesday.

The mirrors will allow the telescope to see fainter stars and to see deeper into the sky, said Gerard van Belle, an astronomer at Lowell Observatory, a partner on the project. The mirrors will increase the amount of light the system can capture by about by 50 times.

Currently, the system can only measure stars that are bright enough to be seen with the naked eye. The telescope is already capable of seeing a distance equivalent of being able to view an orange in New York City from Flagstaff.

“With the new setup, we’ll be able to beat that by a factor of 10,” van Belle said.

The telescope’s observations have been used to create and update star catalogues, which are used in a range of applications such as navigation for deep space missions and determining the location of the satellite array used by GPS systems.

With the upgrade, the system may be able to observe deep space objects that have been too dim for the telescope, according to the Naval Research Laboratory and the U.S. Naval Observatory, the two other partners on the project.

Objects like binary stars, nebulae and star clusters have previously been difficult to pinpoint and map, said Paul Shankland, director of the Naval Observatory’s Flagstaff Station.

The $3.25 million project was funded through a grant from the Naval Research Laboratory.